feat: Update featured posts titles for better variety

[akshay0611]

Summary: This PR replaces the repeated titles in the featured posts section with unique and relevant ones. The changes aim to improve variety and engagement by showcasing diverse topics.

Changes Made:

• Updated the titles of each card to reflect unique and meaningful content.
• Updated the alt attributes of the associated images for better accessibility and context.
• Ensured alignment with existing CSS styles and framework conventions.

Testing:

• Verified responsiveness across different screen sizes.
• Ensured proper rendering of the cards and their content.

Related Issue: Closes #15